North Narrabeen – current water temperature and swimming conditions

Water Temperature in North Narrabeen: Daily Trends, Historical Records, and Forecast

✅ Water in this range is comfortably warm and widely considered ideal for swimming. Most people can stay in the water for a long time without feeling cold. It works well for families, recreational swimming, and active water sports such as swimming, surfing, and paddleboarding.

It’s important to note that these swimming tips and recommendations apply only in settled weather. When air temperatures drop below 20°C — and sometimes even below 25°C — swimming can feel uncomfortable, even when water temperatures are relatively high.

Water Temperature Over the Last 30 Days

Water temperatures in North Narrabeen have been on a steady rise over the past month and have continued to climb over the last week.

According to our forecast, Sea water temperature in North Narrabeen will be 23.5°C in the next 7 days. See the table below for daily data for the upcoming week.

Table of Daily Sea Temperature Data

Annual Water Temperature Overview by Month

Monthly Water Temp Ranges

30°C

25°C

20°C

15°C

10°c

5°C

0°C

Annual Water Temperature Trend

North Narrabeen, on Sydney’s Northern Beaches, sits where Narrabeen Lagoon meets the open Tasman Sea, giving the area a mix of ocean and coastal influences. Water temperatures here follow a clear seasonal pattern. In summer, the sea is usually at its warmest, sitting around 22–26 °C, which feels comfortable for longer swims and regular dips. Autumn brings a gradual cool-down to roughly 20–23 °C. Winter is cooler but still swimmable for many people, with ocean temperatures generally between 16–20 °C, while spring sees a steady warm-up from about 18 °C into the low twenties as conditions become more settled.